公开(公告)号：EP3745575A1

公开(公告)日：2020-12-02

申请号：EP20177280.3

申请日：2020-05-28

申请人： Silergy Semiconductor Technology (Hangzhou) Ltd

发明人： WANG, Zhaofeng ,  HUANG, Xiaodong ,  ZHAO, Chen

IPC分类号： H02M1/42 ,  H02M1/12

摘要： A power factor correction circuit, a control method and a controller are disclosed. On-time of a main switch of a switching-type regulator is adjusted based on the measured total harmonic distortion, to decrease total harmonic distortion while performing power factor correction, without special compensation for a certain type of factors that affect a total harmonic distortion index, such that the control method is simplified.

公开(公告)号：EP3745574A1

公开(公告)日：2020-12-02

申请号：EP20177279.5

申请日：2020-05-28

申请人： Silergy Semiconductor Technology (Hangzhou) Ltd

发明人： WANG, Zhaofeng ,  HUANG, Xiaodong ,  ZHAO, Chen

IPC分类号： H02M1/42 ,  H02M1/12

摘要： A power factor correction circuit, a control method and a controller are provided. A current reference signal is adjusted based on a total harmonic distortion and an amplitude ratio of each harmonic component that are measured at an input port, to minimize the total harmonic distortion while performing power factor correction without performing a specific compensation design for a single category of factors affecting total harmonic distortion indicators, thereby simplifying an overall control method.